Initial commit: Add logistics and order_detail message types

- Add Logistics component with progress tracking
- Add OrderDetail component for order information
- Support data-driven steps and actions
- Add blue color scale to widget SCSS
- Fix node overflow and progress bar rendering issues
- Add English translations for dashboard components

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

app/javascript/dashboard/composables/spec/useTranslations.spec.js

@@ -0,0 +1,31 @@
+import { selectTranslation } from '../useTranslations';
+
+describe('selectTranslation', () => {
+  it('returns null when translations is null', () => {
+    expect(selectTranslation(null, 'en', 'en')).toBeNull();
+  });
+
+  it('returns null when translations is empty', () => {
+    expect(selectTranslation({}, 'en', 'en')).toBeNull();
+  });
+
+  it('returns first translation when no locale matches', () => {
+    const translations = { en: 'Hello', es: 'Hola' };
+    expect(selectTranslation(translations, 'fr', 'de')).toBe('Hello');
+  });
+
+  it('returns translation matching agent locale', () => {
+    const translations = { en: 'Hello', es: 'Hola', zh_CN: '你好' };
+    expect(selectTranslation(translations, 'es', 'en')).toBe('Hola');
+  });
+
+  it('falls back to account locale when agent locale not found', () => {
+    const translations = { en: 'Hello', zh_CN: '你好' };
+    expect(selectTranslation(translations, 'fr', 'zh_CN')).toBe('你好');
+  });
+
+  it('returns first translation when both locales are undefined', () => {
+    const translations = { en: 'Hello', es: 'Hola' };
+    expect(selectTranslation(translations, undefined, undefined)).toBe('Hello');
+  });
+});